155925157 has 2 divisors, whose sum is σ = 155925158. Its totient is φ = 155925156.

The previous prime is 155925149. The next prime is 155925193. The reversal of 155925157 is 751529551.

It is a happy number.

155925157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102941316 + 52983841 = 10146^2 + 7279^2 .

It is a cyclic number.

It is not a de Polignac number, because 155925157 - 2³ = 155925149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155925127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77962578 + 77962579.

It is an arithmetic number, because the mean of its divisors is an integer number (77962579).

Almost surely, 2^155925157 is an apocalyptic number.

It is an amenable number.

155925157 is a deficient number, since it is larger than the sum of its proper divisors (1).

155925157 is an equidigital number, since it uses as much as digits as its factorization.

155925157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78750, while the sum is 40.

The square root of 155925157 is about 12486.9995195003. Note that the first 3 decimals coincide. The cubic root of 155925157 is about 538.2351585954.

The spelling of 155925157 in words is "one hundred fifty-five million, nine hundred twenty-five thousand, one hundred fifty-seven".